A research team proceeded towards the apex of a natural geologic protuberance, the purpose of their expedition being the procurement of a sample of fluid hydride of oxygen in a large vessel. The exact size of which was unspecified. One member of the team precipitously descended, sustaining severe damage to the upper cranial portion of his anatomical structure.
Subsequently the second member of the team performed a self rotational translation oriented in the same direction taken by the first team member. Or as you may have heard it in nursery
Jack and Jill, went up the hill
to fetch a pail of water...
Jack fell down
and broke his crown
And Jill came tumbling after